Which of the following platforms supports collaboration on projects?

Google Docs is designed specifically to facilitate collaboration on projects. It allows multiple users to work on a document simultaneously, providing real-time editing, commenting, and suggesting features. This means that as one person makes changes, others can see those updates live, which enhances teamwork and communication. In addition, Google Docs supports version history, enabling collaborators to track changes and revert to previous versions if necessary. This collaborative capability makes it a powerful tool for group assignments, brainstorming sessions, and any scenario where shared input is valuable.

Options like Google Sites, Google Maps, and Google Play do not primarily focus on document collaboration in the same way that Google Docs does. Google Sites allows for website creation and sharing but lacks the real-time collaborative editing features found in Google Docs. Google Maps is used for navigation and location sharing, while Google Play is a platform for app distribution and does not support collaborative work on projects. Thus, the primary strength of Google Docs lies in its focused features that support collaborative efforts.